The Urban Dictionary T-Shirt

To conduct one's self befitting of a man deserving of a fine piece of trim.

John C and Ralph M watched as a sniveling young punk cry like a school girl while watching his women knob down on another man. John C turned to Ralph M and stated: That mother fucker needs to MAN UP. Derived Mid 1970s NJ.

The Urban Dictionary T-Shirt

After a long night of high octane™ drinking.... the procces of hanging over occurs. To deposit these prodiougous feelings a beer or some other alcholic beverage is in order, to insure the release of the harmful intoxicating feeling.

After Timmy was drinking with high octane™ all night, he arose out of bed with a raging headache. To release the pain from his body he had a man up session and felt much better.